Scientific Linux: CVE-2011-1926 Moderate: cyrus-imapd TLS Issue

Date: Wed, 8 Jun 2011 16:09:33 -0500
Reply-To: Troy Dawson 
Sender: Security Errata for Scientific Linux
 
From: Troy Dawson 
Subject: Security ERRATA Moderate: cyrus-imapd on SL4.x, SL5.x,
 SL6.x i386/x86_64
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Synopsis: Moderate: cyrus-imapd security update
Issue Date: 2011-06-08
CVE Numbers: CVE-2011-1926

The cyrus-imapd packages contain a high-performance mail server with
IMAP, POP3, NNTP, and Sieve support.

It was discovered that cyrus-imapd did not flush the received commands
buffer after switching to TLS encryption for IMAP, LMTP, NNTP, and POP3
sessions. A man-in-the-middle attacker could use this flaw to inject
protocol commands into a victim's TLS session initialization messages.
This could lead to those commands being processed by cyrus-imapd,
potentially allowing the attacker to steal the victim's mail or
authentication credentials. (CVE-2011-1926)

Users of cyrus-imapd are advised to upgrade to these updated packages,
which contain a backported patch to correct this issue. After installing
the update, cyrus-imapd will be restarted automatically.

SL4:
 i386
 cyrus-imapd-2.2.12-15.el4.i386.rpm
 cyrus-imapd-utils-2.2.12-15.el4.i386.rpm
 cyrus-imapd-nntp-2.2.12-15.el4.i386.rpm
 cyrus-imapd-murder-2.2.12-15.el4.i386.rpm
 perl-Cyrus-2.2.12-15.el4.i386.rpm
 cyrus-imapd-devel-2.2.12-15.el4.i386.rpm
 cyrus-imapd-debuginfo-2.2.12-15.el4.i386.rpm
 x86_64
 cyrus-imapd-devel-2.2.12-15.el4.x86_64.rpm
 cyrus-imapd-murder-2.2.12-15.el4.x86_64.rpm
 perl-Cyrus-2.2.12-15.el4.x86_64.rpm
 cyrus-imapd-nntp-2.2.12-15.el4.x86_64.rpm
 cyrus-imapd-2.2.12-15.el4.x86_64.rpm
 cyrus-imapd-utils-2.2.12-15.el4.x86_64.rpm
 cyrus-imapd-debuginfo-2.2.12-15.el4.x86_64.rpm
SL5:
 i386
 cyrus-imapd-utils-2.3.7-7.el5_6.4.i386.rpm
 cyrus-imapd-2.3.7-7.el5_6.4.i386.rpm
 cyrus-imapd-devel-2.3.7-7.el5_6.4.i386.rpm
 cyrus-imapd-perl-2.3.7-7.el5_6.4.i386.rpm
 cyrus-imapd-debuginfo-2.3.7-7.el5_6.4.i386.rpm
 x86_64
 cyrus-imapd-perl-2.3.7-7.el5_6.4.x86_64.rpm
 cyrus-imapd-utils-2.3.7-7.el5_6.4.x86_64.rpm
 cyrus-imapd-devel-2.3.7-7.el5_6.4.x86_64.rpm
 cyrus-imapd-devel-2.3.7-7.el5_6.4.i386.rpm
 cyrus-imapd-2.3.7-7.el5_6.4.x86_64.rpm
 cyrus-imapd-debuginfo-2.3.7-7.el5_6.4.x86_64.rpm
 cyrus-imapd-debuginfo-2.3.7-7.el5_6.4.i386.rpm
SL6:
 i386
 cyrus-imapd-utils-2.3.16-6.el6_1.2.i686.rpm
 cyrus-imapd-2.3.16-6.el6_1.2.i686.rpm
 cyrus-imapd-devel-2.3.16-6.el6_1.2.i686.rpm
 cyrus-imapd-debuginfo-2.3.16-6.el6_1.2.i686.rpm
 x86_64
 cyrus-imapd-debuginfo-2.3.16-6.el6_1.2.i686.rpm
 cyrus-imapd-2.3.16-6.el6_1.2.x86_64.rpm
 cyrus-imapd-debuginfo-2.3.16-6.el6_1.2.x86_64.rpm
 cyrus-imapd-utils-2.3.16-6.el6_1.2.x86_64.rpm
 cyrus-imapd-devel-2.3.16-6.el6_1.2.x86_64.rpm
 cyrus-imapd-devel-2.3.16-6.el6_1.2.i686.rpm

- Scientific Linux Development Team